Fortnite crashes after update in loading screen?

Since the update on Thursday, the game from the friend in the loading screen crash when the bar is almost full. Anyone idea or solution? Before that, everything went normal. Sometimes sparks after more often shy but takes a long time…

If you are at the Pc then:

In Epic Games on the gear -> Verify

Then it checks out the whole files, if there are any errors.

I told him, he's doing it right now. But thanks anyway.